Bogles' Slippery Bogle, Gladecover Scout, and Silhana Ledgewalker all have hexproof, meaning your targeted removal like Lightning Bolt and Skred cannot touch the enchanted creature at all, so the matchup hinges on tempo and racing. Curfew bounces the hexproof threat back to hand, stripping off all the Auras (Rancor, Ethereal Armor, Armadillo Cloak, Ancestral Mask) permanently since they fall off when the creature leaves, which is a huge tempo and card-advantage swing. Flaring Pain doesn't stop their creatures but ensures your own Fiery Cannonade or Skred damage can't be prevented if they ever gain access to damage prevention, though its main value is minor; consider it a low-priority include. Spell Pierce is weak since Bogles plays proactively with cheap spells that beat the tax, so trim it for the Curfews.